CN112757739B - 一种共挤出型抗菌功能无底涂消光薄膜及其制备方法 - Google Patents
一种共挤出型抗菌功能无底涂消光薄膜及其制备方法 Download PDFInfo
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Abstract
一种共挤出型抗菌功能无底涂消光薄膜及其制备方法，涉及预涂膜复合材料技术领域，包括膜体，所述膜体从上至下依次包括抗菌剂层、消光层、抗静电层、支撑层、附着剂层以及防粘连剂层，所述抗菌剂层的抗菌成分包括石墨烯及其衍生物、次氯酸钠、纳米银、氧化亚铜、氧化锌、聚六亚甲基双胍盐酸盐、聚六亚甲基胍盐酸盐、聚六亚甲基胍磷酸盐、有机硅季铵盐、牡丹花根皮提取物中的一种或多种，这种共挤出型抗菌功能无底涂消光薄膜具有良好的抗菌性以及抗污染能力。
Description
技术领域：
本发明涉及预涂膜复合材料技术领域，尤其涉及一种共挤出型抗菌功能无底涂消光薄膜及其制备方法。
背景技术：
细菌、病毒等微生物始终伴随人类存在。人类因细菌感染、病毒传染及体积更大的微生物危害或传播疾病而致病、致死的事故每天都发生。细菌、病毒等微生物传播传染的四大媒介为：空气、水、表面、人。BOPP膜在世界范围内有60年多的发展和使用历史，已经深入到人类社会生活的方方面面，其便利、卫生、可回收性等特点，使其成为国民生产生活不可或缺的塑料包装材料。近十年时间左右，行业里摸索在包装物的塑料薄膜表面实现抗菌功能，各有不足：有小分子添加剂，易迁移失效时间短的抗菌方案；有银离子等成本高昂，易对人体造成二次伤害的抗菌方案；也有高分子接枝组装，技术门坎高，安全不失效的抗菌方案。仅在中国，BOPP年使用量约300-600万吨。因此，开发一款BOPP膜，用在包装物表面覆膜的抗菌BOPP产品，实现安全、长效、广谱的抗菌功能，并能兼顾包装物的高雅美观、环保减排包装、生产节能、减化工艺、节省人工、降低工人工作强度。具有十分重要的实际意义。
在塑料包装薄膜表面喷洒84消毒液（次氯酸钠），只适合在车站、宾馆、公园、医疗场所等短时间、或者临时性消毒杀菌。聚六亚甲基双胍盐酸盐、聚六亚甲基胍磷酸盐、有机硅季铵盐抗菌剂，产品技术门坎较高，对生物危害性大。聚六亚甲基胍盐酸盐抗菌剂，技术门坎高，安全。抗菌性纳米材料，因其独特的结构及优异的抗菌性能，常用于修饰膜表面，进而增强膜的杀菌效果，控制膜生物污染。目前常用的抗菌性纳米材料为银纳米颗粒和石墨烯及其衍生物，银纳米颗粒具有优异的抑菌杀菌效果，主要靠银离子释放并与细菌细胞壁中的蛋白质中的硫相互作用，从而损害细胞的功能，但银离子的泄露会造成对环境产生二次污染等问题，且对人类健康可能会造成隐患；石墨烯及其衍生物不仅具有较强的抑菌性能，而且环境友好，但其在使用过程存在溶胀等问题，进而限制了其应用。
CN2789254Y公开了一种抗菌BOPP薄膜，包括透明普通薄膜层，其特征在于：所述透明普通薄膜层的一侧面设有透明抗菌功能层。所述透明普通薄膜层与透明抗菌功能层之间设有白色不透明层。所述抗菌功能层内含有抗菌母料。所述抗菌母料为以多胺与胍盐聚合改性的聚丙烯功能料。所述抗菌母料是载银离子的复合物。所述白色不透明层与透明普通薄膜层、抗菌功能层之间分别设有透明普通薄膜层或白色不透明层。所述透明普通薄膜层还可为抗菌功能层。所述的抗菌BOPP薄膜，含有金属银离子，会对环境造成污染，对人类健康造成隐患。
现有技术中缺少具有良好的抗菌性以及抗污染能力、可用于纸塑复合的无底涂消光薄膜及其制备方法。
发明内容：
为了解决上述技术问题，本发明提供了一种共挤出型抗菌功能无底涂消光薄膜及其制备方法，这种共挤出型抗菌功能无底涂消光薄膜具有良好的抗菌性以及抗污染能力。
本发明是通过下述技术方案来实现的：
一种共挤出型抗菌功能无底涂消光薄膜，包括膜体，其特征是，所述膜体从上至下依次包括抗菌剂层、消光层、抗静电层、支撑层、附着剂层以及防粘连剂层，所述抗菌剂层的抗菌成分包括石墨烯及其衍生物、次氯酸钠、纳米银、氧化亚铜、氧化锌、聚六亚甲基双胍盐酸盐、聚六亚甲基胍盐酸盐、聚六亚甲基胍磷酸盐、有机硅季铵盐、牡丹花根皮提取物中的一种或多种。
在本发明的另一个方面中，所述抗菌剂层的抗菌成分为牡丹花根皮提取物，所述牡丹花根皮提取物包含丹皮酚、牡丹酚甙、牡丹酚原甙、牡丹酚新甙、芍药甙、氧化芍药甙、苯甲酰芍药甙、苯甲酰氧化芍药甙、没食子酸中的一种或多种。
在本发明的另一个方面中，所述膜体厚度为10-100.15μm，所述抗菌剂层厚度为0.05-1.00μm。
在本发明的另一个方面中，所述膜体为双向拉伸聚丙烯薄膜、双拉伸聚酯薄膜、双拉伸聚酰胺膜、流延聚丙烯膜和聚乙烯吹塑薄膜中的任意一种或几种的组合。
在本发明的另一个方面中，所述消光层采用聚丙烯聚乙烯共混消光树脂，消光层厚度为1.5-3.0μm。
在本发明的另一个方面中，所述防粘连剂层采用PMMA、石蜡、锻炼硅石、高岭土、碳酸钙、无定型二氧化硅、玻璃微珠中的一种或几种，防粘连剂层厚度为0.5-2.5μm。
在本发明的另一个方面中，所述附着剂层采用PU改性料、EVA改性料、PE改性料或者前面几种树脂的马来酸酐接枝改性中的一种或者几种，附着剂层厚度为0.05-2.00μm。
在本发明的另一个方面中，所述抗静电层采用乙氧基化烷基胺，抗静电层厚度为0.05-1.00μm。
在本发明的另一个方面中，所述支撑层采用等规聚丙烯，等规度为93-97.5%，支撑层厚度为6.00-98.00μm。
一种如上述共挤出型抗菌功能无底涂消光薄膜的制备方法，其特征是，包括：
选料：抗菌剂层质量比为0 .05-6.00wt%，消光层质量比为1.50-30.00wt%，防粘连剂层质量比为0.01-0.06wt%，附着剂层质量比为0.60-6.00wt%，抗静电层质量比为1.50～30.00wt%，支撑层质量比为0.98～0.79wt%；
挤出：将配好的原料在主、辅挤出机上熔融挤出，经过计量和过滤后进入模头；
流涎铸片：从挤出模头挤出熔体紧贴骤冷辊表面，在气刀、激冷辊和水浴槽、导向辊的作用下形成流涎厚片；
纵向拉伸：将流涎厚片引出，在纵向拉伸机前后不同辊速的拉伸辊以及中间的加热辊的作用下，纵向拉伸，拉长倍数4-6倍；
横向拉伸：在横向拉伸机上，用链条夹具夹住薄膜两边，沿着逐渐变宽的轨道向前移动，经过加热区域以及定型区域，将薄膜的宽度变大，拉宽倍数8-10倍；
牵引收卷：经过切边，测厚以及电晕处理，将薄膜卷为筒状膜卷；
时效室熟化：膜卷从生产线下卷后，合格半成品送到温度20-40℃，相对密闭的保温室里，熟化24-72小时；
分切包装：熟化好的膜卷，送分切包装工序，分切成预定长度、宽度的成品，进行包装。
本发明的有益效果是：本发明能够有效提升薄膜的抑菌和抗菌性能，抗菌剂在保证抗菌效果的基础上，节约了成本；采用多层结构，增加了产品的阻隔性，有效地降低透水性和透气性，从源头上降低了真菌和微生物的侵入机会。
附图说明：
图1为本发明实施例1-3结构示意图。
图2为本发明实施例4工艺流程图。
附图中：1、抗菌剂层，2、消光层，3、抗静电层，4、支撑层，5、附着剂层，6、防粘连剂层。
具体实施方式：
下面结合附图及实施例对本发明的实施方式做进一步说明：
在对本发明的描述中，需要理解的是，指示方位或位置关系的描述为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明保护范围的限制。
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“设置”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明中的具体含义。
实施例1
一种共挤出型抗菌功能无底涂消光薄膜，包括膜体，所述膜体从上至下依次包括抗菌剂层1、消光层2、抗静电层3、支撑层4、附着剂层5以及防粘连剂层6，所述抗菌剂层（1）的抗菌成分包括石墨烯及其衍生物、次氯酸钠、纳米银、氧化亚铜、氧化锌、聚六亚甲基双胍盐酸盐、聚六亚甲基胍盐酸盐、聚六亚甲基胍磷酸盐、有机硅季铵盐、牡丹花根皮提取物中的一种或多种，本实施例中所述抗菌剂层1的抗菌成分为牡丹花根皮提取物，本实施例中的牡丹花根皮提取物以毛茛科植物牡丹的干燥根皮为原料，采用乙醇提取法进行提取，提取出牡丹花根皮提取物包含丹皮酚、牡丹酚甙、牡丹酚原甙、牡丹酚新甙、芍药甙、氧化芍药甙、苯甲酰芍药甙、苯甲酰氧化芍药甙、没食子酸中的一种或多种，在本实施例中牡丹花根皮提取物以聚丙烯或聚乙烯为载体。所述膜体厚度为100.15μm，所述抗菌剂层1所述抗菌剂层1厚度为0.05μm。所述膜体为双向拉伸聚丙烯薄膜、双拉伸聚酯薄膜、双拉伸聚酰胺膜、流延聚丙烯膜和聚乙烯吹塑薄膜中的任意一种或几种的组合，本实施例中为双向拉伸聚丙烯薄膜（BOPP）。所述消光层2采用聚丙烯聚乙烯共混消光树脂，消光层2厚度为1.5μm。所述防粘连剂层6采用PMMA、石蜡、锻炼硅石、高岭土、碳酸钙、无定型二氧化硅、玻璃微珠中的一种或几种，防粘连剂层厚度为0.5μm。所述附着剂层5采用PU改性料、EVA改性料、PE改性料或者前面几种树脂的马来酸酐接枝改性中的一种或者几种，附着剂层5厚度为0.05μm，所述抗静电层3采用乙氧基化烷基胺，抗静电层3厚度为0.05μm。所述支撑层4采用等规聚丙烯，等规度为93%，支撑层4厚度为98μm。
将牡丹花根皮提取物作为抗菌剂层的抗菌成分应用在这种共挤出型无底涂消光薄膜上创实现了较为卓越的抗菌效果的同时，还能够与消光层、抗静电层、支撑层、附着剂层以及防粘连剂层共同组成稳定的BOPP膜，进而用于工业包装预涂膜BOPP消光无底涂基材。
采用GB/T 31402-2015/ISO 22196：2007（IDT）塑料-塑料表面抗菌性能试验方法对本实施例进行抗菌性能检测，检测结果为抗菌率大于99.9%。
抗菌剂层添加抗菌母料，该母料有效抗菌成份牡丹花根皮提取物，提取自天然毛茛科植物牡丹的根皮，以聚丙烯或聚乙烯等为载体，采用共混挤出切粒技术，在基本树脂上均匀分布，具有高效光谱活性，是一种具有良好消毒抗菌和防霉性能的抗菌物质。本抗菌剂添加到BOPP无底涂消光膜后，有以下几个显著特点：①高效广谱的抗菌性，经检测，对大肠杆菌和金黄色葡萄球菌等抗菌率达到99.9％；②良好的防菌性：对黑曲霉素、黄曲霉素等、绿色卡霉测试，结果达到一级防霉标准；③安全无毒；④抗菌效果长效：薄膜存在一天，抗菌效果不会衰退，不会失灭，寿命长达1年以上。
本实施例中六层结构的 BOPP 抗菌无底涂消光膜的结构独特，其具有的特点 ：(1)、保持消光膜高雅外观的同时，增大抗菌保障障；（2）特别设置的附着层，使后道预涂加工时去掉涂胶工艺，消除了VOCs产生，节能环保；(3)、抗菌膜层薄，有利于抗菌分子游离到层外，及时接触到菌体；(4)、膜层薄，减少抗菌剂的投入，比原料混拌单层膜，节约抗菌剂80％，节约成本，使价格接近现有的 BOPP 无底涂消光膜；(5)、六层结构，增加过滤层数，抗菌膜的透水性和透气性大大降低，减少真菌和微生物的侵入几率。
实施例2
一种共挤出型抗菌功能无底涂消光薄膜，包括膜体，所述膜体从上至下依次包括抗菌剂层1、消光层2、抗静电层3、支撑层4、附着剂层5以及防粘连剂层6，所述抗菌剂层1的抗菌成分包括石墨烯及其衍生物、次氯酸钠、纳米银、氧化亚铜、氧化锌、聚六亚甲基双胍盐酸盐、聚六亚甲基胍盐酸盐、聚六亚甲基胍磷酸盐、有机硅季铵盐、牡丹花根皮提取物中的一种或多种，本实施例中所述抗菌剂层1的抗菌成分为牡丹花根皮提取物，本实施例中的牡丹花根皮提取物以毛茛科植物牡丹的干燥根皮为原料，采用乙醇提取法进行提取，提取出牡丹花根皮提取物包含丹皮酚、牡丹酚甙、牡丹酚原甙、牡丹酚新甙、芍药甙、氧化芍药甙、苯甲酰芍药甙、苯甲酰氧化芍药甙、没食子酸中的一种或多种，在本实施例中牡丹花根皮提取物以聚丙烯或聚乙烯为载体。所述膜体厚度为10μm，所述抗菌剂层1厚度为0.5μm。所述膜体为双向拉伸聚丙烯薄膜、双拉伸聚酯薄膜、双拉伸聚酰胺膜、流延聚丙烯膜和聚乙烯吹塑薄膜中的任意一种或几种的组合，双向拉伸聚丙烯薄膜（BOPP）。所述消光层2采用聚丙烯聚乙烯共混消光树脂，消光层2厚度为1.6μm。所述防粘连剂层6采用PMMA、石蜡、锻炼硅石、高岭土、碳酸钙、无定型二氧化硅、玻璃微珠中的一种或几种，防粘连剂层厚度为1μm。所述附着剂层5采用PU改性料、EVA改性料、PE改性料或者前面几种树脂的马来酸酐接枝改性中的一种或者几种，附着剂层5厚度为0.5μm，所述抗静电层3采用乙氧基化烷基胺，抗静电层3厚度为0.4μm。所述支撑层4采用等规聚丙烯，等规度为97.5%，支撑层4厚度为6.00μm。
将牡丹花根皮提取物作为抗菌剂层的抗菌成分应用在这种共挤出型无底涂消光薄膜上创实现了较为卓越的抗菌效果的同时，还能够与消光层、抗静电层、支撑层、附着剂层以及防粘连剂层共同组成稳定的BOPP膜，进而用于工业包装预涂膜BOPP消光无底涂基材。
采用GB/T 31402-2015/ISO 22196：2007（IDT）塑料-塑料表面抗菌性能试验方法对本实施例进行抗菌性能检测，检测结果为抗菌率大于99.9%。
抗菌剂层添加抗菌母料，该母料有效抗菌成份牡丹花根皮提取物，提取自天然毛茛科植物牡丹的根皮，以聚丙烯或聚乙烯等为载体，采用共混挤出切粒技术，在基本树脂上均匀分布，具有高效光谱活性，是一种具有良好消毒抗菌和防霉性能的抗菌物质。本抗菌剂添加到BOPP无底涂消光膜后，有以下几个显著特点：①高效广谱的抗菌性，经检测，对大肠杆菌和金黄色葡萄球菌等抗菌率达到99.9％；②良好的防菌性：对黑曲霉素、黄曲霉素等、绿色卡霉测试，结果达到一级防霉标准；③安全无毒；④抗菌效果长效：薄膜存在一天，抗菌效果不会衰退，不会失灭，寿命长达1年以上。
本实施例中六层结构的 BOPP 抗菌无底涂消光膜的结构独特，其具有的特点 ：(1)、保持消光膜高雅外观的同时，增大抗菌保障障；（2）特别设置的附着层，使后道预涂加工时去掉涂胶工艺，消除了VOCs产生，节能环保；(3)、抗菌膜层薄，有利于抗菌分子游离到层外，及时接触到菌体；(4)、膜层薄，减少抗菌剂的投入，比原料混拌单层膜，节约抗菌剂80％，节约成本，使价格接近现有的 BOPP 无底涂消光膜；(5)、六层结构，增加过滤层数，抗菌膜的透水性和透气性大大降低，减少真菌和微生物的侵入几率。
实施例3
一种共挤出型抗菌功能无底涂消光薄膜，包括膜体，所述膜体从上至下依次包括抗菌剂层1、消光层2、抗静电层3、支撑层4、附着剂层5以及防粘连剂层6，所述抗菌剂层1的抗菌成分包括石墨烯及其衍生物、次氯酸钠、纳米银、氧化亚铜、氧化锌、聚六亚甲基双胍盐酸盐、聚六亚甲基胍盐酸盐、聚六亚甲基胍磷酸盐、有机硅季铵盐、牡丹花根皮提取物中的一种或多种，本实施例中所述抗菌剂层1的抗菌成分为牡丹花根皮提取物，本实施例中的牡丹花根皮提取物以毛茛科植物牡丹的干燥根皮为原料，采用乙醇提取法进行提取，提取出牡丹花根皮提取物包含丹皮酚、牡丹酚甙、牡丹酚原甙、牡丹酚新甙、芍药甙、氧化芍药甙、苯甲酰芍药甙、苯甲酰氧化芍药甙、没食子酸中的一种或多种，在本实施例中牡丹花根皮提取物以聚丙烯或聚乙烯为载体。所述膜体厚度为59.5μm，所述抗菌剂层1所述抗菌剂层1厚度为1.00μm。所述膜体为双向拉伸聚丙烯薄膜、双拉伸聚酯薄膜、双拉伸聚酰胺膜、流延聚丙烯膜和聚乙烯吹塑薄膜中的任意一种或几种的组合。所述消光层2采用聚丙烯聚乙烯共混消光树脂，消光层2厚度为3.0μm。所述防粘连剂层6采用PMMA、石蜡、锻炼硅石、高岭土、碳酸钙、无定型二氧化硅、玻璃微珠中的一种或几种，防粘连剂层厚度为2.5μm。所述附着剂层5采用PU改性料、EVA改性料、PE改性料或者前面几种树脂的马来酸酐接枝改性中的一种或者几种，附着剂层5厚度为2.00μm。所述抗静电层3采用乙氧基化烷基胺，抗静电层3厚度为1.00μm。所述支撑层4采用等规聚丙烯，等规度为95%，支撑层4厚度为50μm。
将牡丹花根皮提取物作为抗菌剂层的抗菌成分应用在这种共挤出型无底涂消光薄膜上创实现了较为卓越的抗菌效果的同时，还能够与消光层、抗静电层、支撑层、附着剂层以及防粘连剂层共同组成稳定的BOPP膜，进而用于工业包装预涂膜BOPP消光无底涂基材。
采用GB/T 31402-2015/ISO 22196：2007（IDT）塑料-塑料表面抗菌性能试验方法对本实施例进行抗菌性能检测，检测结果为抗菌率大于99.9%。
抗菌剂层添加抗菌母料，该母料有效抗菌成份牡丹花根皮提取物，提取自天然毛茛科植物牡丹的根皮，以聚丙烯或聚乙烯等为载体，采用共混挤出切粒技术，在基本树脂上均匀分布，具有高效光谱活性，是一种具有良好消毒抗菌和防霉性能的抗菌物质。本抗菌剂添加到BOPP无底涂消光膜后，有以下几个显著特点：①高效广谱的抗菌性，经检测，对大肠杆菌和金黄色葡萄球菌等抗菌率达到99.9％；②良好的防菌性：对黑曲霉素、黄曲霉素等、绿色卡霉测试，结果达到一级防霉标准；③安全无毒；④抗菌效果长效：薄膜存在一天，抗菌效果不会衰退，不会失灭，寿命长达1年以上。
本实施例中六层结构的 BOPP 抗菌无底涂消光膜的结构独特，其具有的特点：(1)、保持消光膜高雅外观的同时，增大抗菌保障障；（2）特别设置的附着层，使后道预涂加工时去掉涂胶工艺，消除了VOCs产生，节能环保；(3)、抗菌膜层薄，有利于抗菌分子游离到层外，及时接触到菌体；(4)、膜层薄，减少抗菌剂的投入，比原料混拌单层膜，节约抗菌剂80％，节约成本，使价格接近现有的BOPP无底涂消光膜；(5)、六层结构，增加过滤层数，抗菌膜的透水性和透气性大大降低，减少真菌和微生物的侵入几率。
实施例4
一种如实施例1-3中的共挤出型抗菌功能无底涂消光薄膜的制备方法，包括以下步骤：
(1)、选料 ：依照共挤出型BOPP抗菌功能无底涂消光薄膜中，抗菌剂层1，质量含量为：0.05～6.00wt%，其它层占总质量的质量百分比为：94.00～99.95wt%；
消光层2采用聚丙烯聚乙烯共混消光树脂，占总质量的质量百分比为：1.50～30.00wt%；
防粘连剂层6采用PMMA、石蜡、锻炼硅石、高岭土、碳酸钙、无定型二氧化硅、玻璃微珠中的一种或几种，占总质量的质量百分比为 ：0.01～0.06wt%；
附着剂层5采用PU改性料、EVA改性料、PE改性料或者前面几种树脂的马来酸酐接枝改性中的一种或者几种，占总质量的质量百分比为：0.60～6.00wt%；
抗静电层3采用乙氧基化烷基胺，占总质量的质量百分比为：1.50～30.00wt%；
支撑层4采用等规聚丙烯，占总质量的质量百分比为：0.98～0.79wt%；
(2)、挤出 ：将配好的原料在主、辅挤出机上熔融挤出，经过计量和过滤后进入模头；
(3)、流涎铸片：从挤出模头挤出熔体紧贴骤冷辊表面，在气刀、激冷辊和水浴槽、导向辊的作用下形成流涎厚片；
(4)、纵向拉伸：将流涎厚片引出，在纵向拉伸机前后不同辊速的拉伸辊以及中间的加热辊的作用下，纵向拉伸。拉长倍数4-6倍；
(5)、横向拉伸：在横向拉伸机上，用链条夹具夹住薄膜两边，沿着逐渐变宽的轨道向前移动，经过加热区域以及定型区域，将薄膜的宽度变大。拉宽倍数8-10倍；
(6)、牵引收卷：经过切边，测厚以及电晕处理，将薄膜卷为筒状膜卷。
(7)、时效室熟化：膜卷从生产线下卷后，合格半成品送到温度20-40℃，相对密闭的保温室里，熟化24-72小时。
(8)、分切包装：熟化好的膜卷，送分切包装工序，按客户要求，分切成一定长度、宽度的成品，并按要求包装。
(9)、成品入库：分切包装下来的产品，交仓库保管。
总之，以上所述仅为本发明的较佳实施例，凡依本发明申请专利范围所作的均等变化与修饰，皆应属本发明专利的涵盖范围。
Claims (5)
1.一种共挤出型抗菌功能无底涂消光薄膜，包括膜体，其特征是，所述膜体从上至下依次包括抗菌剂层（1）、消光层（2）、抗静电层（3）、支撑层（4）、附着剂层（5）以及防粘连剂层（6），所述抗菌剂层的抗菌成分为牡丹花根皮提取物，所述牡丹花根皮提取物以毛茛科植物牡丹的干燥根皮为原料，采用乙醇提取法进行提取，提取出牡丹花根皮提取物包含丹皮酚、牡丹酚甙、牡丹酚原甙、牡丹酚新甙、芍药甙、氧化芍药甙、苯甲酰芍药甙、苯甲酰氧化芍药甙、没食子酸中的一种或多种，所述牡丹花根皮提取物以聚丙烯或聚乙烯为载体；所述膜体厚度为10-100.15μm，所述抗菌剂层（1）厚度为0.05-1.00μm；所述膜体为双向拉伸聚丙烯薄膜、双拉伸聚酯薄膜、双拉伸聚酰胺膜、流延聚丙烯膜和聚乙烯吹塑薄膜中的任意一种或几种的组合；所述消光层（2）采用聚丙烯聚乙烯共混消光树脂，消光层（2）厚度为1.5-3.0μm；
所述膜体采用以下方法制备得到：
选料：抗菌剂层（1）质量比为0 .05-6.00wt%，消光层（2）质量比为1.50-30.00wt%，防粘连剂层（6）质量比为0.01-0.06wt%，附着剂层（5）质量比为0.60-6.00wt%，抗静电层（3）质量比为1.50～30.00wt%，支撑层（4）质量比为0.98～0.79wt%；
挤出：将配好的原料在主、辅挤出机上熔融挤出，经过计量和过滤后进入模头；
流涎铸片：从挤出模头挤出熔体紧贴骤冷辊表面，在气刀、激冷辊和水浴槽、导向辊的作用下形成流涎厚片；
纵向拉伸：将流涎厚片引出，在纵向拉伸机前后不同辊速的拉伸辊以及中间的加热辊的作用下，纵向拉伸，拉长倍数4-6倍；
横向拉伸：在横向拉伸机上，用链条夹具夹住薄膜两边，沿着逐渐变宽的轨道向前移动，经过加热区域以及定型区域，将薄膜的宽度变大，拉宽倍数8-10倍；
牵引收卷：经过切边，测厚以及电晕处理，将薄膜卷为筒状膜卷；
时效室熟化：膜卷从生产线下卷后，合格半成品送到温度20-40℃，相对密闭的保温室里，熟化24-72小时；
分切包装：熟化好的膜卷，送分切包装工序，分切成预定长度、宽度的成品，进行包装。
2.根据权利要求1所述的一种共挤出型抗菌功能无底涂消光薄膜，其特征在于，所述防粘连剂层（6）采用PMMA、石蜡、锻炼硅石、高岭土、碳酸钙、无定型二氧化硅、玻璃微珠中的一种或几种，防粘连剂层厚度为0.5-2.5μm。
3.根据权利要求2所述的一种共挤出型抗菌功能无底涂消光薄膜，其特征在于，所述附着剂层（5）采用PU改性料、EVA改性料、PE改性料或者前面几种树脂的马来酸酐接枝改性中的一种或者几种，附着剂层（5）厚度为0.05-2.00μm。
4.根据权利要求3所述的一种共挤出型抗菌功能无底涂消光薄膜，其特征在于，所述抗静电层（3）采用乙氧基化烷基胺，抗静电层（3）厚度为0.05-1.00μm。
5.根据权利要求4所述的一种共挤出型抗菌功能无底涂消光薄膜，其特征在于，所述支撑层（4）采用等规聚丙烯，等规度为93-97.5%，支撑层（4）厚度为6.00-98.00μm。
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Inventor after: Yang Dong Inventor after: Wang Jianfeng Inventor after: Liu Xiaoya Inventor before: Yang Dong |